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1. 发明授权

US06269660B1 Lamp for a vehicle and method of making the same 有权
标题翻译：一种车辆用灯具及其制作方法
公开(公告)号：US06269660B1
公开(公告)日：2001-08-07
申请号：US09293720
申请日：1999-04-16
申请人： Toshiyuki Kondo , Toshio Miyokawa
发明人： Toshiyuki Kondo , Toshio Miyokawa
IPC分类号： B60Q100
CPC分类号： F21S43/26 , F21S41/28 , Y10S65/13
摘要： A lamp for vehicle that includes a light source, a housing, a reflector and a lens is disclosed. The lens is made by the process that includes the steps of (a) assuming an imaginary plane with a cross hatching pattern made of crossing groups of plural lines disposed in parallel at a constant pitch, (b) deforming the imaginary plane by a desired shape consisting of a convex surface, a concave surface or a combination of both surfaces, so that the cross hatching pattern is deformed into a process surface, and (c) processing a lens cut in accordance with the cross hatching pattern when the process surface is orthographically projected onto the lens surface. The deformation given to the imaginary plane is performed so that the maximum pitch of the cross hatching pattern orthographically projected onto the lens surface is 1.5 times or more and 20 times or less the minimum pitch. The lens cut may have curvatures of the same diffusion coefficient regardless of the pitch of the cross hatching pattern. Alternatively, the lens cut may have a curvature whose diffusion coefficient becomes greater when the pitch of the cross hatching pattern becomes greater. A convex or concave rib can be formed as a discontinuous portion in at least a part of the substantial boundary between the process surface in which the cross hatching pattern of the lens surface is deformed and the process surface in which the cross hatching pattern is not is deformed.
摘要翻译：公开了一种包括光源，壳体，反射器和透镜的用于车辆的灯。透镜的制造方法包括以下步骤：（a）假设由具有以恒定间距平行设置的多条交叉组构成的交叉阴影图案的假想平面，（b）使假想平面变形所需形状包括凸面，凹面或两面的组合，使得交叉阴影图案变形为工艺表面，以及（c）当工艺表面正交时，根据交叉阴影图案处理切割的透镜投影到镜头表面上。执行给予虚拟平面的变形，使得正交投影到透镜表面上的交叉阴影图案的最大间距是最小间距的1.5倍以上且20倍以下。透镜切割可以具有相同扩散系数的曲率，而不管交叉阴影图案的间距如何。或者，透镜切割可以具有当交叉阴影图案的间距变大时其扩散系数变大的曲率。可以在其中透镜表面的交叉阴影图案变形的处理表面与交叉阴影图案不是的处理表面之间的实质边界的至少一部分中的不连续部分形成凸形或凹形肋变形

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